Apparatus for washing gas



' W. H. GEESMAN.

APPARATUS FOR WASHING GAS. APPLICATION FILED ocr. 31.1911.

Patented Aug. 23, 1921.

2 SHEETS-SHEET l.

I /zzzfenfor f5' y mud W. H. GEESMAN.

APPARATUS` FOR WASHING GAS. APPLICATION FILED'ocT. 31. 1917.

1,388,8 12. Patented Aug. 23, 1921.

2 SHEETS-SHEET 2.

AUNITED STATES PATENr OFFICE.

WILBUR H. GEESMAN, OF YOUNGSTOWN, OHIO, ASSIGNOR OF FORTY-EIGHT ONE- HUNDREDTHS TO ARTHUR G. MCKEE & COMPANY, OF CLEVELAND, OHIO, CORPORATION F v DELAWARE, yTWENTY-SIX ONE-HUNDREDTHS TO F. E. KLING, 0F YOUNGSTOWN, OIHIOY AND TWENTY-SIX ONE-HUNDREDTHS T0 L. B.

.WEIDLEINQ OF CLEVELAND, OHIO.

Specification of Letters Patent. Patented Aug. 23,

APPARATUS FOR WASHING GAS.

Application led October 31, l1917'. Serial No. 199,477.

To all cvkom t may concern:

Be it known that Ii, WILBUR H. GEESMAN,

a citizen of the United States, resident of' Youngstown, county of Mahoning, and State of Ohio, have invented new and useful Improvements in Apparatus forM Washing Gas, of which the following is a specication, the principle of the invention being herein explained and the best mode in which I have contemplated` applying that principle, so as to distinguish it from other inventions.

Myv invention-relates to an apparatus for washing gas, and particularly to gas washers utilized in connection with blast furnace operation. My new and improved gas washer is designed to effect a much more eiicient cleansing of the gas than is possible with any lother means of fthis character with which I am acquainted, and this yeiicient cleansing isv effected very economically as willappear in they following detailed de scription.

The annexed drawings andthe following description set forth in detail certain ste s and means embodying m-y invention, the d1sclosed means,`however, constituting but one of' the various mechanical forms by whichV thel rinciple of the invention may be applied In said'annexed drawings: a Figure 1 represents an elevation of my new and improved gas washer, showing one form of means by which my improvements may be eiiiciently carriedoutthe same being represented in connection with related parts of a blast furnace; Fig. 2 represents a plan view, upon an enlarged scale, of essential features of my improved washer; and Fig. 3

through the vertical conduit portion 4 and.

represents a central vertical longitudinal section taken in the plane vindicated by the lines III-III, Fig. 2.

Referring to the annexed drawings, thc usual dust catcher of a blast furnace is indicated by the ordinal 1 disposed in the usual relation to a downcomer (not shown) also the as conduit 2 provided with the elbow 3 whence the gas under pressure passes is sprayed by the water discharged from the nozzles 6 and passing down through the wood" lattice-work 5, the water under the samepressure as the gas standing at approximately the level designated at 7. A water outlet 8, and a periodically opened outlet 9 for the sludge and other solid material gathered from the gas by said water, are also provided. An upper elbow 10 of the conduit leads to the downwardly extending vertical portion 11 provided with nozzles 12 discharging otherv water, the elbow 13 leading to another upwardly projecting vertical portion 4 provided in turn with sprays 6 and lattice-work 5. From this vertical portion 4 of the conduit, the gas is conveyed through the portion 14 to the hot blast stoves, boilers or gas engines, as may be desired. All that has been heretofore described is common to blast furnace operation.

In combination with the above I have provided 'cascading water through which the gas is caused to travel in a. direction transverse to .its usual path of travel through the conduit, and, as shown in the accompanying drawings, in substantially a horizontal direction, z'. e., at right angles to the natural direction ofthe falling cascade, the gas moving at considerable vetical conduit portions 4 and consisting of i inclined circular cover or cone-shaped members 15. Said baffling member 15 is supported upon lthe conduit portion 3 by the angles 3 and is provided at its outer edge with an annular angle 15 forming a trough around said edge. Supported upon the inner wall of the conduit portion 4 by angles 16 and 16', is a screen 17, the same being formed preferably of a coarse mesh wire, for instance, of one inch mesh No. 10 wire, said screen being of annular construction and disposed below the baille member 15 and at a spaced distance exteriorly of the outer edge of' the trough 15.` Secured to the angle 16 and interiorly of the same and trough 15 and also below said trough is an annular plate 18, to the lower outer surface of which the screen 17 is also secured, so that said screen lies substantially in the same cylinder as the annular plate 18. The screen also is secured at its bottom edge to an annular angle 19 secured to the angles 16. A pipe 20 is suitably supported immediately above the baille 15 for furnishing additional fresh water in quantity. This additional large quantity of water is thus furnished near the bottom of the tower and the necessity of pumping the same to the top of the tower is obviated. For the purpose of subjecting the gas to an effective preliminary washing, by the means and in the manner hereinafter fully described, this water serves as well as would comparatively large amounts of water introduced at different levels into the tower or introduced near the top thereof. Inasmuch as my new and improved washer is utilized particularly in connection with blast furnace operation, I obtain the large quantity of lower water by using blast furnace bosh water which is available at this level. However, I do not claim a blast furnace as part of my new and improved combination, and the large quantity of lower water, to be utilized for an effective preliminary cleaning, by the means and in the manner described, may be obtained from any suitable source and furnished in any suitable manner without the necessity of pumping the same to a considerable part or the entire height of the tower. It will be noted that the construction hereinbefore described provides an annular opening 21 between the exterior face of the trough 15 'and the plate 18 and that the bosh water furnished through the pipe 20 as well as the spray water will run down the top of the member 15, lill the trough 15' and iiow over the same so as to pass through the opening 21 in a waterfallv or cascade and so down interiorly of the screen 17, the arrangement being such that the waterfall will be at its top, z'. e., near the edge of the trough 15', a material distance from the screen 17. lIt will also be readily apparent that the gas issuing from the conduit will be diverted radially through the cascade in a path transversely of the conduit 4 and carry with it the water through the screen 17, which latter will break up the water and uniformly and intimately mix the gas and water and effectively entrain the dirt and dust contained in the gas.- These impurities are continuously washedl from the screen by the water. The spaced relation of the cascade and screen' enables the whole of the latter to be utilized, the cascade under the pressure of the gas assuming the Vshape of a cone. If the screen were disposed too close to the cascade, all of the water would be carried through the upper part of the screen. Also, by carrying the water to and through the screen by gas pressure, I .obviate the clogging of the screen with dust which would prevent the breaking up of the water. The gas will then resume its ordinary direction of travel and pass upwardly through the conduit portion 4 to be further cleansed by the water sprayed from the nozzles 6, thence downwardly through the conduit portion 11, being sprayed by the water from the nozzles 12, and into the second conduit portion 4 where the above-described steps may be repeated. y

The bosh water furnished through the pipe 20 is available at this level without any pumpingl and consequently the service of the same is obtained at a minimum cost. This bosh water has usually heretofore been run oif and discharged from further service, but by this means becomes available for washing gas without repumping and with a corres onding saving in operating expense. y its use as shown I am required to pump less water through the sprays 6 and 12 which reduces the cost of this pumped water.

As a result of introducing the gas centrally of the conduit 4 and in an axial direction, I have found that I overcome any tendency of the gas to channel up one side of the shell 4. This tendency is particularly apparent when the gas is introduced into Athe washer from one side, whence it rushes across the tank to the other side and passes up through the tank in an eccentric manner, so that the gas is not equally distributed over the entire area of the washer. From my cent1-'ally arranged, longitudinally disposed gas inlet, I divert the gas' in a horizontal direction through the cascading water, whence it passes upwardly in a uniformly distributed amount, filling the entire washer and through the spray water.

What I claim is:

1. In a gas washer, the combination with a gas conduit and means passing gas therethrough; of means arranged to furnish Water to said conduit, means arranged to cause the water to fall in a cascade through .s

said conduit, means arranged to divert the gas horizontally throughv saidcascade, and an annular screen disposed a spaced distance exteriorly of the latter for breaking up the water, resulting in an intimate mix of the latter and the gas.

2. In a gas washer, the combination of a gas conduit and means passing gasthere-V cadinv ranged to furnish water to the top of the conduit in a comparatively small amount; means arranged to furnish water in quantity to the bottom 0f the conduit; and means for directing the gas through said bottom water and then through said top water.

4. In a gas washer, the combination with a gas conduit and means passing gas therethrough; of means arranged to furnish falling water to said conduit, means arranged to cause the gas to pass transversely through said falling water, and means disposed a spaced distance exteriorly of the water for breaking up the latter, resulting in an intimate intermix of the water and the gas.

5. In a gas Washer, the combination with a gas conduit and means passing gas therethrough; of means arranged to furnish water in a spray therein, means arranged to furnish water in a cascade, means arranged to divert the gas from its natural direction of travel in said conduit through said cascade and transversely of the latter, and a screen intersecting said transverse path of travel and disposed a spaced distance exteriorly of said cascade.

6. In a gas washer, the combination with a gas conduit and means passing gas therethrough under pressure; of means arranged to spray water therein, a baffling member disposed in said conduit beneath said spray, means arranged to permit the water to run down and cascade oil said baffling member, and a screen disposed in said conduit belowr said bafiing member and exteriorly of the outer edge thereof, the pressure of the gas carrying the cascading water to and through said screen.

7. In a gas washer, the combination with a gas conduit and means passing gas therethrough under pressure; of means arranged to spray water therein, a bafliing member disposed in said conduit beneath said spray,

means arranged to permit the water to run down and cascade off said baffling member, means furnishing additional water inra volume immediately above said baiiiing member, and a screen disposed a spaced distance from said cascade and exteriorly of the latter, the pressure of the gas carrying the caswater to and through said screen.

8. lan a gas washer, the combination with a gas' conduit and means passing gas therethrough; of means arranged to spray water therein, a baiiiing member disposed in said conduit beneath said spray, means arranged to permit the water to run down and cascade off said bafliing member, an annular screen disposed in said conduit below said baffling member and slightly exteriorly of the outer edge thereof, and an annular plate disposed upon said screen and extending above the outer edge of said baffling member, an annular space thus being provided between the latter and saidplate for the cascadin water.

9. n a gas washer, the combination of an upwardly extending gas conduit; means for furnishing water therein; an annular screen supported therein and removed from the wall thereof; and a baffling member supported in said conduit above said screen and interiorly of the latter.

10. In a gas washer, a gas conduit; means for furnishing water therein; a screen-supporting frame mounted therein and comprising longitudinally extending angles and annular transverse angular members, and a screen supported by said angles.

11. In a gas washer, a gas conduit; means for furnishing water therein; longitudinally extending angles supported therein; an annular plate supported near the top and interiorly of said angles; an annular angle supported interiorly of said angles and below said plate; and a screen supported by said angles and plate intermediately of the latter y and said annular angle.

12. In a gas washer, the combination of a gas conduit; means furnishing water therein; and a convex battling member supported in said conduit below said water furnishing means, and formed with an upwardly-turned rim adapted to trap the water to allow the latter to flow from the baffling member in an unbroken ring.

13. In a gas washer, the combination of a gas conduit; means furnishing water therein; a cover or cone-shaped baffling member supported in said conduit below said water furnishing means; and an annular angle secured around the bottom edge of said bafiiing member and forming an open trough for the water.

Sg'ned by me, this 24th day of October, 191

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